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Science X / Tropical cooling points to a world 5.4°C colder at the Ice Age peak
During the Last Glacial Maximum, tropical regions with lush vegetation would have looked completely different. The last Ice Age reached its peak about 20,000–21,000 years ago, and massive ice sheets covered parts of North ...
Science X / Why eye contact may help babies learn: A hidden link between two brains
Have you ever noticed how babies get hooked the moment someone makes eye contact with them? That eye contact is not only cute; it may also send a powerful message to a baby. For years, scientists have been investigating whether ...
Science X / A baby's lungs may begin responding to vitamin D sooner than scientists once thought
Many pregnant women around the world are low in vitamin D. This is a very common issue that has prompted inquiries over the years. It is believed that low levels in pregnant women can cause harm to fetal development. Currently, ...
Science X / Virtual escape test exposes hidden rule people use when identical exits create pressure and no sign points way
Ever wonder who you mimic in a line of people heading for an exit? In an emergency, do you trail the person right ahead, or do you watch what everyone else does? It's a question with surprising implications for how we understand ...
Science X / HIV's hidden history: New study reveals much deeper roots stretching back millions of years
Researchers used to think that HIV and its relatives were pretty recent things, maybe only a few hundred years old. But a growing body of evidence now suggests their history is far more ancient, with viruses closely related ...
Science X / Curious people embrace richer experiences, but cognitive test scores tell a more complicated story
We often hear that a curious mind is a sharp mind, particularly as we age. According to scientists, persistent learners are often open to taking on new challenges and trying new activities. The idea is that engaging with ...
Science X / One long brisk walk may protect your brain from dementia and anxiety more than short walks put together
Exercise is well known for keeping the brain healthy, but does how we move matter as much as how much we move? In a recent study, researchers investigated whether sustained periods of physical activity offer greater long-term ...
Science X / Different flint, same toolmaking strategy: How Neanderthals adjusted their effort to get the same razor-sharp results
The Neanderthal toolkits found in two Ice Age caves near Le Moustier, in southwestern France, tell a surprising story. Even though the types of rock were very different—large, high-quality flint nodules at Le Moustier and ...
Science X / When darkness fell during the total solar eclipse, zoo animals responded in wildly different ways
Imagine a bright, sunny day suddenly turning dark as a solar eclipse sweeps across the sky. Even though humans have watched and recorded eclipses for thousands of years and now understand the science behind them, experiencing ...
Science X / Inside 530-million-year-old embryos, scientists uncover rare time-lapse of early animal growth
Think of a small fossil as the equivalent of a homemade video of prehistoric life. Fossils formed when sea organisms began their great proliferation more than half a billion years ago rarely contained anything but tough structures. ...
Science X / Beneath pale ash, a quantum microscope reveals hidden traces of Neanderthal fire use preserved for millennia
An ancient hearth at El Salt (Spain) is giving up its secrets—not with flames, but with physics. Scientists have already established that Neanderthals used to make fires at this site (spanning from 80,000–45,000 years ago), ...
Science X / Tiny tree snails make historic comeback 40 years after vanishing from the wild
After more than a decade of work to return captive-bred Partula snails to the forests of Moorea, scientists finally found the evidence they had been hoping for. In 2024, scientists evaluating a release site found the first ...
